Internal-combustion engine



J W. MOWBRAY.

INTERNAL CoMBUsTloN ENGINE.

APPLICATION FILED OCT. 4. I9-l6.

Patented (ict. 26, 1920.

UNITED STATES PATENT OFFICE..

JAMES W. MOWBRAY, 0F WINDSOR, ONTARIO, CANADA, ASSIGNOR, BY' DIRECT AND MESNE ASSIGNMENTS, OF TW'O-TIIIRDS TO DAVID A. STEWART, OF LISTOWEL, ONTARIO, CANADA, AND ONE-THIRD TO JACOB C. SIEMON, OF TORONTO, ONTARIO,

CANADA.

INTERNAL-COMBUSTION ENGINE.

Patented Oct. 26, 1920.

Application led October 4, 1916. Serial No. 123,635.

T o all whom t may concern.'

Be it known that I, JAMES W. MOWBRAY, a subject of the King of Great Britain, residing at Windsor, county of Essex, Province of Ontario, Canada, have invented a certain new and useful Improvement in Internal-Combustion Engines, and declare the following to be a full, clear and eXact description of the ksame, such as will enable others skilled in the art to which it pertains to make and use the same, reference being lad to the accompanying drawings, which form a part of this specification.

This invention relates to internal combustion engines and its object is an engine of the four-cycle or stroke type utilizing a sleeve valve operating in conjunction with the piston tocontrol the inta-ke and exhaust ports of the explosion chamber whereby a simplicity of construction is attained and consequent reduction in the liability of disarrangement of the relationship of the several parts. A further object is an engine of the character stated in which air is introduced duringu the introduction of the explosive charge, the oxygen of which assists in the combustion in the explosion chamber preventing carbon deposit. Another object is an engine of the character stated having a sleeve valve controlling the exhaust port and operating in conjunction with the piston to control the fuel and air intake ports preferably in a manner to introduce the air subsequent to the introduction of the fuel charge and segregating a part ofthe fuel charge in its original state and igniting the same to ignite the remaining charge within the chamber. A further object ofthe invention is ay four stroke internal combustion engine in which the fuel charge is introduced by a vacuum released to the intake conduit near the bottom of the intake stroke ofthe piston. These and the other objects and the several novel features of the invention in its preferred form are hereinafter more fully described and claimed and shown in the accompanying drawings in which- Figure l is a vertical cross section of an internal combustion engine embodying my invention.

Fig. 2 is a vertical section of asleeve utilized in controlling the ports of the cylinder.

.in Fig. 1.

Similar characters refer to similar parts throughout. the drawing and specification.

The kengine is provided with the usual crank case 1 on which is mounted a cylinder 2. A crank 3 of ordinary form is provided connected with the piston 4 by means the usual connecting rod 5. The cylinder is provided with a water jacket 6 near the upper end after the usual method and an exhaust port 7 is provided preferably encircling thc upper end of the cylinder to provide a port of large area. The cylinder is also provided with a fuel intake port 8 intermediate its length connected with which 1s the usual intake manifold 9. On the opposite side from the fuel intake port 8, the cylinder is providedwith a port 10 open to atmosphere. n

Reciprocable within the cylinder and riding in close contact with the inner wall thereof is a cylindrical sleeve member 11 eX- tending practically the full length of the cylinder, the sleeve is reciprocable therein by means of a crank 12 and connecting rod 13 and the crank is provided with a; gear 14 connected by a chain 15 with a gear 16 on the crank shaft 3. The gears 16 and 14 are in the proportion of one to two so that during two revolution of the crank shaft 3, the crank shaft 12 makes one complete revolution.

The head 17 of the cylinder proper isl preferably separable therefrom, as indicated and is provided with a cylindrical portion 18 extending into the upper end of the cylindcr and spaced from the wall thereof to receive the end of the sleeve 11, as indicated rlhe portion 18 is preferably provided with a packing ring 19 and the head is also provided with an extension leading through the wall of the encircling jacket to receive the spark plug 20 as indicated, the plug being located preferably directly above the intake port.

The sleeve at the upper end is provided with an exhaust port 2l corresponding with the exhaust port 7 of the cylinder and is also provided with an intake port 22 corresponding with the intake port of the cylinder and intake port 23 corresponding to that of the cylinder, as will be noted in Fig. 1. The porting of the sleeve is such that when the fuel and air inta-ke ports are open the exhaust port is closed and vice versa.) the sleeve beingthus ported to register alternately With the exhaust port and the tuel and intake ports during its recuperation.

lt is to he further noted that While the e1;-

haust port is o( nti-oiled solely by the sleeve to open and close the sainej the flow olf fuel into the explosion chamber is controlled by the piston acting' as a valve in conjunction. with the sleeve. rllhat is--tlie pe s 22 and d may be brought to registration before the piston in its movement has uncovered the fiort 252. This is also true as to the ports 23 and l0.

The vhead of the piston is provided Witl baille Z/l which is positioned proportionatf nearer `he intake side of the cylinder. am aware that it is coininon oractice to i a baille on the heaooi' the piston in e' oi the two-cycle type to pre-,font a "t gas from the intake rport across the Apist il to the exhaust port. ln such case the pose of Athe balde is to deflect charge Vtoward the upper part et the e sion chamber. Tie purpose a use ot the baille in the col st shown differs materially frein two-cycle type mentioned intl tt? a" olf' fuel intake, the vacuun result' the complete downward stroke ot 'fs released to the intake and to tuo tale on the oQposit-e side of 'he el the fuel intake.

cted lirst to the lull vacuum grot vthe Vacuum becomes reduced hy infiloni of fuel but prior to the se" i Vaeuuin created in the chainhen he c talle .port is then opened. rlhe heile is tween the two ports 22 and and really provides a pocket about the fuel in@ te port in which the introduced fuel charge undiluted lijf flow of air into the cylinder through the oort the upward ntrollo of thepiston 'to the position dotted nues in Fig. l, this uiulnuted i arge une surro `between the baille and it'ace oi u ing sleeve .is liroiiuglit contini plug and islired. The t mixture lires the eitiie ch;

the engine is operated to charite that readily igniti ne ano no Glean or too rich As will e undef"l the introduction ot air through the C il,

por' 28 tends to clean the ininture in vlinder and it the entire elii `'frere so leaned or Wealreue l, it it rnot oontinuouslj,T ignite properly. By providing; e

proper prooortions is retained 'the firing; of

the segregated charge tires the entire Charge, By such arrangement it is possible to lire v-.fith an over-uercentage oi' oxygen 1 supports the combustion in the Chanideposits therein. ults ii economy in use birre;

tie in reaoles the new peut is cios-ed n;

(n 1' xfhl A JOViii d, LLL L v Y .i o dosed at t The 1 ,foire ol? the piston sweeps the of? fthe cylinder throiujghthe ei;- is tl `iston reaches the upper enhaus stroke the exhaust 'oo-rt e i, PL

or k

i- Ie port is not essential, as the engine operable without such air intake, the parts erlornnngiall ol the functions stated, hut l if i to us an auxiliary air intalre to proi le o-liygen to support the Combustion in lesion chamber heretofore stated in @ne eiha ist gases. il? ith the use of the 'e and crank l@ ttor operation thereof in i of one to two with that of the piston the usual puppe vali/'es and the inultiity oil parts required in the operation et including earn shaft .and timing earns is entirely dispensed with result- A(I J Oi i9 il .in `an engine that is niore perfect in opj rati n and less liahle to get out of order also less noisy in operation, vas `will he iderstood by those familiar with the art. iile l have shown an engine oit .a particudesigg'n embodying my invention it is to he undu'stood that 'various designs may be 'Zed Within the scope of vthe appended Having thus briefly described rmy invention, its utility and mode of operation, what I claim and desire to Secure by Letters Patent of the United States is e 1. In an internal combustion engine, a cylinder having an exhaust port near the upper end a fuel intake port intermediate its length and an air intake port, a single sleeve reciprocable within the cylinder ported to register alternately with the exhaust port and the fuel and air intake ports of the cylinder, the fuel and air intake ports of the sleeve and the cylinder being simultaneously in registration and controlled solely by the piston and the introduction of fuel and air being caused solely by reduction of pressure withln the cylinder, the said fuel and air ports being so positioned that the air intake port of the sleeve is opened subsequent to the fuel intake and closed prior to the closing of the fuel intake, the reeiprocable movement of the sleeve and piston being in the relation of one to two.

2. In an internal combustion engine, a cylinder having an exhaust port near the upper end, a fuel intake port intermediate its length and an air intake port opposite the fuel intake port, a cylindrical sleeve reciprocable within the cylinder and ported to register alternately with the exhaust port and the fuel and air intake ports, a piston reciprocable within the sleeve controlling the fuel and air intake ports, the two ports being so positioned that the air intake port is opened subsequent to the fuel intake port, the reciprocal movement of the sleeve and piston being in proportion of one to two.

3. In an internal combustion engine, a cylinder having an exhaust port near the upper end, a fuel intake port intermediate its length, and an air intake port substan-A tially opposite the fuel intake port, a cylindrical sleeve reciprocable within the cylinder and ported to register alternately with the exhaust port and with the fuel and air intake ports, a piston reciprocable within the sleeve controlling the fuel and air intake ports, the two ports being so positioned that the air intake port is open subsequent to the fuel intake port, said piston having a wall separating the flow through the two ports into the cylinder, the reciprocation of the sleeve and piston being in the proportion of one to two.

4. In an internal combustion engine, a cylinder having an exhaust ort near the upper end constituting the so e exhaust for the cylinder, a fuel intake port intermediate the length of the cylinder and an air intake port on the side opposite the fuel intake port, a cylindrical sleeve reciprocable within the cylinder, a sleeve ported to register alternately with the exhaust port and the fuel and air intake ports of the cylinder, the fuel and air intake ports of the sleeve being registrable simultaneously with the slmilar ports of the cylinder, a piston reciprocable within the sleeve, movement of the piston opening and closing the fuel and air intake ports ofthe sleeve, the ports being so positioned that the air intake port is opened subsequent to the fuel intake port and closed prior to the closing of the fuel intake port, and means for reciprocating the sleeve and piston in the relation of one to two.

In testimony whereof, I sign this specification.

JAMES W. MOWBRAY. 

